12320145648 has 60 divisors (see below), whose sum is σ = 34491212808. Its totient is φ = 4105296000.

The previous prime is 12320145647. The next prime is 12320145671. The reversal of 12320145648 is 84654102321.

It is a happy number.

12320145648 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 0 + 1 + 4 + 5 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320145641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454986 + ... + 481302.

Almost surely, 2^12320145648 is an apocalyptic number.

12320145648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12320145648 is an abundant number, since it is smaller than the sum of its proper divisors (22171067160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12320145648 is a wasteful number, since it uses less digits than its factorization.

12320145648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29582 (or 29573 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 12320145648 its reverse (84654102321), we get a palindrome (96974247969).

The spelling of 12320145648 in words is "twelve billion, three hundred twenty million, one hundred forty-five thousand, six hundred forty-eight".